Influence of urban runoff, inappropriate waste disposal practices and World War II on the heavy metal status of sediments in the southern half of Saipan Lagoon, Saipan, CNMI
| Autor: | Nathan C. Habana, John A. Starmer, G.R.W. Denton, Carmen Emborski |
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| Rok vydání: | 2014 |
| Předmět: |
Hydrology
Geologic Sediments Pacific Ocean World War II Ecological health chemistry.chemical_element Sediment Heavy metals Aquatic Science Oceanography Pollution Refuse Disposal Mercury (element) chemistry Metals Heavy Environmental science Storm drain Water Pollutants Chemical Micronesia Waste disposal Urban runoff |
| Zdroj: | Marine Pollution Bulletin. 81:276-281 |
| ISSN: | 0025-326X |
| DOI: | 10.1016/j.marpolbul.2014.01.014 |
| Popis: | Heavy metals were examined in sediments from the southern half of Saipan Lagoon. These waters provided tactical access for US troops during WWII and were heavily shelled at the time. Mercury profiles in sediments were, to some extent, reflective of this event. Samples from the southern end of the lagoon, where an old post-war dumpsite once existed, were found to be substantially enriched with Pb, Cu and Zn. Further north, the lagoon was primarily impacted by urban runoff. Metal enrichment in sediments from this region was generally highest at storm drain outlets and attenuated seawards. Moderate enrichment was rarely exceeded for any element other than Hg beyond the 50 m mark. Sediment quality guidelines used to flag potentially adverse ecological health effects revealed no PEL exceedances. TEL exceedances for Pb and Cu were identified in sediments near the former dumpsite. The public health implications of the data are briefly addressed. |
| Databáze: | OpenAIRE |
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